Drill press



March 2, 194s. R, MCF, @NES 2,436,964

DRILL PRESS Filed Sept. ll, 1944 My invention relates to anl improvement jin drill-presses wherein it is `lrl'e'siredrto;p rovide'au apparatusofthe `classidescribed apabl of eon'gmodatingdepthroatwork 'y jjr "I, D rill presses'- have 4fc' onli-non lyjbee onstr'ulitre@ including-fahupi'ght standard;wnichjfadj'ustably supports a transversely*extending arm bearing a Arotatablespindle suitable for supporting; a drill chuck or the like, vMan-yof these (presses are so designed that the "transversely extendingjspindle support may?fluevertically adjusted-jupontjits Standardf f jchullsff'supporting spindle-fis usually- `vertically' slidableffso` that the drill may be moved longitudinally-into-or'out'of the member being drilled. Y @These'. drillpresses have one-common-lfeatifre which is in many instances objectionable. -The laterally extending; seesllaasupmrtagis usually relativelyr short 'in order thatjghe eccentricjload thereupon and upon thesup'pqrtipg standameis not excessive.nv This fact-*has the disadvantage of limiting the-size of the member which may be drilled. 4,Only large and costlyrdrill presseshave. usually'been adapted for drillingnat considerable distances `from^the perimeter of the Work".` a result much of the large size work could not be done `on the ordinary type of drill press.

The object of the present invention is to provide a means of adapting a drill press of ordinary design for deep throat work. This I accomplish'by providing an arm which connects the lower extremity of the standard to the base.

This arm is connected to the base' at a point substantially oir-set from the axis of the standard. By extending this hook shaped olf-set arm to one side ol.' the standard and extending the lateral spindle support from the other side of the standard, work of considerable area may be laid upon the work table of the drill press and holes may be drilled therein.

A feature of the present inventionl lies in the fact that the standard is substantially ycentered with respect to the base. It is common practice to mount the spindle supporting arm on one side of the standard and to mount the driving motor i RalphrvlilsonV Jones, SnrSt.

" result-ale andere ssignor to .1

"1v1-4inL :,1 i A* 1;' 'u La t.. is'normally more securely attachedjfto'lthe Ybasethanin the :usual `typt* 0f drill press-with'whicniI-Qam familiar;y Not only istlieE end of thqstandard supported in thebase, bjltjalso` the "orti-setVv arm` acts as a brace between the "base and a point orr` thestandard substantially above thefbase; thus yholding-the standard morefirnrly-'than would otherwise be possible.

"These; and other objects and, novel features of my, @mien will' befmcrealearlyj-and fullrset frtlrfirri the iollowingjspecincation land claim: 11.11 thfrdr Wings v.famillespart of' my specifi- ,tural 1S .newswire-'view ofrmrdrill press d'SSfblfQDQifatiOnf. J 2 "1",asimilarprspective View Shavinglftorjuse` on normal sized' t emargl'oianrdesired tra@ Slolfldbya upportine `'stsarldmd V`Such as .the tubular standar l fg'I'lfQJ-specic drillpress symbolic of a type of drill press which may be employed in connection with my base support. Virtually any conventional drill press may be converted to deep throat work through the use of the base B supporting the drill press A.

The drill press includes a laterally extending arm or support Il having a vertical aperture I2 therein which embraces the standard I0. A tightening mechanism operated by the lever I3 holds the support H in vertically adjusted position upon the standard l0.

A spindle I4 is rotatably supported by the arm or support Il and extends substantially parallel to the standard I0 and in spaced relation thereto. The spindle I 4 'is adapted to support a drill chuck I5 or the like whichA may support a drill such as I8. The spindle H is vertically adjustable in the support Il and lQvertical movement of the spindle is controlled by. rotation of the stub shaft I 1 upon which is mounted a series of radially extending operating arms or levers I9. The spindle I4 is driven in any suitable manner such as by a shaft spline connected to the spindle upon the upper extremity ,of which is mounted a pulley enclosed by the guard 20. The pulley is operated by a belt 2| driven from a pulley 22 on the shaft 23 of the motor-2,5. The motor 24 is supported by a. bracket plate 25 on the support I I. It will be noted that the motor 24 is mounted on the opposite side of the supporting standard 3 l from the spindle I4 so that the weight of the spindle is substantially counter-balanced.

As previously stated all of the foregoing construction is merely illustrative of a typical drill press construction which may be mounted on the standard I0.

The base 26 may be of any desired shape including a table portion 21 which extends beneath the spindle vHl and a table extension portion 29 which extends beneath the axis of the standard I6. The base 26 is preferably hollow and the table 21 thereof is provided with radially extending slots 30 emanating from the center ofV the table so as to provide .a means by which work may be bolted to the table '21 or "guides may be mounted thereon for properly vpositioning workr with respect to the spindle. An elongated slot .3l is also preferably provided in the center of the 4 ed even more securely than in conventional equipment, while in raised position the support is as firm Ias with usual construction.

It should be noted that when the standard is in the elevated position shown in Figure 10 of the drawings, work of relatively large perimeter may be drilled, portions ,of this work extending between the arm 32 and the upper surface of the base table 26. Much ylarger' worky may thus be handled by the drill press without lengthening the spindle supporting arm Il or increasing the yeccentric load upon the standard I0.

. In accordance with .the patent statutes, I have described the principles of construction and op- ;eration of :my drill press, and while I have ent xdeavored .to-set forth the best embodiment there- .\of,. l'. desire to have it understood that obvious table into which the drill I6 may extend when.

the drill passes throughlthe object upon the table.

Anarm 3-2 .issecured vto the base 26 by any `suitable means lsuch as by bolts 3,3. The .arm 32 extends upwardly from the rear end 34 of the base 26 and then extends substantially parallel to the base and spaced substantially above the same. The Vextreme -end of the arm -32 is provided with vertically aligned apertures 35 of a size to accommodate the standard- I0. A set screw 36 extends into the Varm end 31 for holding the standard Hl -in set .relation to the arm 32. This set screw 36 may be tightened when the standard yIll is in the .elevated position illustratedin Figure 1 of -the drawings, leaving the upper surface of the ytable 26 entirely free from the front edge thereof to the arm 32. Alternatively the set screw 36 may be tightened while the standard Il! is in lowered position, as in Figure 2 of the drawings.

A socket 38 is provided in the base 26 in axial alignment with the apertures v65. Thus when'the standard ID is in the lowered position illustrated in 4Figure 2 of the drawings the standard Ill may be engagedY in the socket 39 .andbe braced by the arm v32 which engages the standard at a point spaced from the lower extremity thereof.

Thus in lowered position thestandard issupplort-` changes may be made within the scope of the following claim without departing from the spirit of my invention.

I claim: l y Y A drill .press comprising Va base, an arm having one end secured to said base `to extend upwardly therefronnsaid arm having a free end extending laterally to position the free vend laterally .spaced `from Athe end thereof connected to said base, a .standard `adiustably secured to said free end of said arm,y a spindle support extending laterally from .said standard, and a socket in said base of a diameter to receive the lower end of. said standard 4in one adjusted position 4thereof and to hold said standard from lateral movement.

AROBERT MCFALL JONES.

REFERENCES CITED The 'following references .are -of record fin the le 'of this patent:

v l UNITED STATES PATENTS Number v 455,353 France s'.; May 22, 19-1-3 

